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BS ISO 23555-2:2022

BS ISO 23555-2:2022

$198.66

Gas pressure safety and control devices for use in gas transmission, distribution and installations for inlet pressures up to and including 10 MPa – Gas pressure regulator

Published By Publication Date Number of Pages
BSI 2022 70
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PDF Catalog

PDF Pages PDF Title
2 undefined
7 Foreword
8 Introduction
9 1 Scope
10 2 Normative references
3 Terms and definitions and symbols
3.1 Terms and definitions
3.1.1 General terms
13 3.1.2 Terms related to flow
14 3.1.3 Terms related to variables in the controlling process
3.1.4 Terms related to the controlled process
3.1.5 Terms related to functional performance
16 3.1.6 Feature related to accuracy
3.1.7 Terms related to lockā€‘up behaviour
18 3.1.8 Terms related to design and tests
3.1.9 Summary of symbols for creep relief valves
3.2 Symbols
19 4 Classification
4.1 General
4.2 Temperature classes
4.3 Strength types
4.4 Fail conditions
5 Materials
6 Design
6.1 General
20 6.2 Strength of metallic body and its inner metallic partition walls
6.3 Other pressure metallic containing parts of integral and differential strength controls
6.4 Strength of parts transmitting actuating forces
6.5 Strength of diaphragms (elastomeric parts)
6.6 Welding
6.7 Main function of a regulator
6.7.1 General
21 6.7.2 Gas pressure regulators with associated safety devices
22 7 Performance and testing requirements
7.1 General
7.1.1 Approach to stable product phase
23 7.1.2 Test conditions
7.1.3 Test tolerances
7.1.4 Overview table
24 7.2 Requirements
7.2.1 Test rig
7.2.2 Classification of stable production tests
7.2.3 Dimensional check and visual inspection
7.2.4 Shell strength
7.2.5 External/Internal tightness
7.2.6 Antistatic characteristics
7.2.7 Sound emission
25 7.2.8 Control classifications
26 7.2.9 Fail close conditions
7.2.10 Fail open conditions
7.2.11 Closing force for monitor at full open position
27 7.2.12 Gas pressure regulator sizing
30 7.3 Tests
7.3.1 General
7.3.2 Materials check at stable production phase
7.3.3 Dimensional check and visual inspection
7.3.4 Mounting position
7.3.5 Shell strength
7.3.6 External tightness
31 7.3.7 Internal tightness
7.3.8 Antistatic characteristics
7.3.9 Methods for calculating and measuring the sound pressure level
7.3.10 Control classifications
40 7.3.11 Final visual inspections
41 7.3.12 Verification of closing force for monitor in fully open position under normal operating conditions
8 Documentation
8.1 General
8.2 Documentation related to type test
8.3 Documentation related to batch surveillance
8.4 Documentation related to the routine tests
8.4.1 Documentation provided at the request of the customer
8.4.2 Documentation provided with the regulator
9 Marking
9.1 General
42 9.2 Basic requirements
9.3 Markings for the various connections
9.4 Marking of integrated safety devices
9.5 Other additional requirements
10 Packaging and transportation of finished product
43 Annex A (normative) List of materials
44 Annex B (normative) Elastomeric material
45 Annex C (normative) High pressure vent limiter
46 Annex D (normative) Compliance evaluation
47 Annex E (informative) Alternative methods for the determination of the accuracy class, the lock-up pressure class, the maximum accuracy flow rate, the flow coefficients and the verification of the hysteresis band
55 Annex F (informative) Inspection certificate
58 Annex G (informative) Acceptance test
59 Annex H (normative) Token (creep) relief device
61 Annex I (informative) Order specification
63 Annex J (informative) Dynamic force calculation method
66 Bibliography

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BS ISO 23555-2:2022
$198.66